By Competitor Running, Published May. 17, 2010
Improve your posture and eliminate back pain with this fun strengthening exercise.
Subscribe to the FREE Competitor Running weekly newsletter
Competitor.com is the leading runner's resource: from reviews of the best running shoes to marathon training tips, injury prevention race coverage and more!
Stay up-to-date on EVERYTHING running – delivered in a format optimized for desktop, tablets and smartphones!
Click to Subscribe
© 2014 Competitor Group Inc. All Rights Reserved